Production of petrol



- i 1,632,011 June 9 F. TINKER I PRODUCTION OF PETROL Filed Sept. 25; 1922 Condenser F'act/b/zaf/hg 7 7 Column Juper/vea/er Sepamf/kg Dru/n Jf/V/ Heczf' fnferc'baryer UNITED STATES- PATIENT oF'FIoE.

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,This invention relates to the om heavy hy rocarbon oils such as crude mineral oils,

tar oils, fuel oils, kerosene and the like, and has for its object to enable a higher yield of motor spirit to be obtained economical- 1y1 from a system-containing, for example, t e elements of an ordinary topping plant. Such a la-nt consists essentially of a the heated pipe still, a se arating drum, a fractionating column an a con enser, allconnect'ed in series by suitably. arranged pipes. According to the present invention the liquefied portion of the distillate collected by reflux in the fractionating column is passed through an additionalstill and superheater wherein such distillate is. cracked, and the resultant vapour cracked is 'delivered to the fractionating column or to any other suitable part of the system.

The accompanying diagram illustrates one manner of carrying the invention into effect.

- Referring to the diagram .a is the fire cheated pipe still, I; the separating drum, 0

'. .ser of an ordinary topping plant. In con-.

the fra'ctionating column, and d the'condenjunction with this apparatus there may be employed a heat interchanger e, whereby heat contained in the hot residue drawn from the separating drum b maybe utilized for initial heating of the crude oil passing to the still a.

In carryin my invention into efiect I add 'to -the a ove mentioned system what may be termed a loop or closed circuit 7 com mencing at the fractionatin column 0 and after passin through anot erstill 'g and superheater column 0. Liquid distillate drawn fromthis column c.is passed through the said; still g- .and superheater h and is cracked therein and theresulting cracked vapour is delivered to the same tractionating column. In this way the normal yield of petrol can be advantageously in an economical manner and withoutfmeonvement chan of existing plant. Furthermore, relative y; clean ,distlllate of a more or less constant ade,-and'free' from light oilon the one nd' and heavy residue on the other, is

suppl ed to. the superheating system for p I w undergoing cons cracking purposes.

- venient manner.

returning to the fractionating "formed to form reflux condensate wh'il out of. contact with raw oil, cracking the .re

690,450, and in GreatBfltain Janu'ary 7,1922.

from the extra still g and superheater to the fractionating column a, as it ma be delivered to any other suitable part o the ma n system e. g. the separating drum 1) as indicated by dotted lines in the diagram. 4 Likewise, if in certain circumstances it. be, desired, the pipe still and separating drum jrjao of the topping plant may bBzI'BPlfiCGd the olderform of crude still, in which case the vapour from the additional parts 9 and. It could beoreturned to the still. Thejextra still 9 and superheater k may consist of two separate parts, or a single element may perform the double function of the two parts. c When using a loop in accordance with this invention for increasing the yield of petrol from an, ordinary toppingplantit is possible to effect the ewe ing of oil in the loop time through the loop can be much greater than in the main part of the system and consequently carboniza'tion can be'reduoedto a minimum. Owing to the greater volume of va our and consequently heat delivered 1nto t 'e fractionating column when the loop is employed, it is jinecessary to increase the provisions ordinarily made in conjunction with that column for cooling the vapour, andwthis can be effected in-any con- .85 Having thus described my invention what I i- I claim as new and desire to secure by l'aet ters Patent is 1; 1. A method of treating oil which epm prises distilling the oil to top the saine,;, tionating the vapors formed to form a; densate while "out of'contactwith raw oil H and treating the condensate thus formed to crackthe same and-thus to form a cracked vapor, introducing said cracked vapor 'directly into the first mentioned'vapors. v

1 2. The process oftreating oiliz which com..

.pri'ses distilling the oil to top the same in a distilling zone, refluxing vapors thus flux condensate in a se arate zone to form. a crackedvapor cracked vapor directly into the first men 3. Apparetus for treating oil, comprising means, means for superheating vapors means for vaporizing said oil, a rectifying formed in said second vaporizing means means, means for passing vapors formed in means for passing said superheated vapors said vaporizing means to said rectifying directly to said rectifying means.

i means, a second vaporizing means, means In testimony whereof I have signed mj' for assing condensate formed in said recmemo to this specification.

tifymg means to said second vaporizing g FRANK TINKER. 

